Apparatus and method for door and window side flashing

ABSTRACT

A window and door side flashing is installed with a double self adhesive flashing. The flashing may be provided as a tape or sheets, with adhesive pre-applied to both sides of a substrate. Protective liners may be removed in strips from either side of the flashing in order to expose a desired width of adhesive for attachment to portions of door or window jamb, framing, brick mold, or exterior sheeting. Other areas of the flashing remain covered to permit easier handling and installation. After application, the flashing provides a continuous barrier to water intrusion. In other embodiments, an extruded plastic flashing is provided. The flashing may have flexible fins to seal against water intrusion.

RELATED APPLICATIONS

This application claims the benefit of U.S. Provisional patent application No. 60/757,684 filed Jan. 10, 2006 by applicant.

FIELD OF INVENTION

This invention relates to a door or window side flashing system, devices, and methods to direct moisture away from the inside of a structure; for installation of roofing membrane or underlayment; and for installation of weather resistive barrier on the exterior of the building.

BACKGROUND

It is desirable to provide window and door side flashing to prevent water intrusion and to promote drainage. It is desirable that the apparatus and method can be used for construction in all price ranges of housing, and for any door or window height or depth.

When installing a door or a window, it is desirable to seal against the water intrusion into the wall cavity and into the building. The seal between the building and the window or door nailing flange or brick mold is frequently accomplished by adhesive caulk that creates the seal between the building and the window. In addition, at the side of the jamb on the inside of the building, an additional seal is needed between the jamb and the rough opening to prevent air and infiltration.

A flashing, such as tape, or other waterproofing material is often used to mechanically overlap the nailing flange and prevent moisture intrusion behind the flange or a brick mold.

Prior art techniques include the use of a self-adhering membrane which is a membrane that can adhere to a substrate and to itself. A portion of the membrane may overlap, and adhere to itself without the use of an additional adhesive. The undersurface of a self-adhering membrane is typically protected by a release paper or film, which prevents the membrane from bonding to itself during shipping and handling.

Self adhesive flashing is a flashing or waterproofing membrane, which is frequently used for diversion of water. The membrane is provided in the form of tape or sheet that can adhere to a substrate and to itself at overlaps without the use of an additional adhesive. The undersurface of a self-adhering membrane is typically protected by a release paper or film, which prevents the membrane from bonding to itself during shipping and handling.

The current invention includes the design and the use of self-adhering membrane and self adhesive flashing with specific construction of the release paper, and with adhesive on both sides of the self-adhering membrane or self adhesive flashing.

Some prior art techniques include applying an expandable foam and a tape or sheet material to seal between a door or window flashing and a wall frame. One disadvantage to an expandable foam is that the expansion can cause the jamb to bulge and cause undesirable friction between the door or window and the jamb. This friction makes it difficult to open and close the window or door. It is desirable to provide a method to seal jambs that does not interfere with the operation of a window or door.

Copending U.S. patent application Ser. No. 10/730,414 by applicant describes a window sill pan or door sill pan flashing and is incorporated by reference in this application. The sill pan has an inclined base, window or door supports which can be extruded as part of the base unit, and end cap corner elements which can be snapped or otherwise attached to the base. Sill pan offsets provided in the rear sill pan wall and in the front flange create a flow path for water to drain from the sill. The base may be solid or hollow with window or door supports extending vertically through the base. The sill pan may be manufactured by extrusion, and end caps may be injection molded. The base may be fabricated from fiberglass, metal, or plastic. A window support means is provided in a horizontal orientation so that the base can be extruded.

Copending U.S. patent application Ser. No. 11/143,149 by applicant describes a window sill pan or door sill head flashing for straight or arched window and door openings and is incorporated by reference in this application. In some embodiments of that invention, where the top portion of the window or door opening is straight, the flashing includes a base portion and a lip. In other embodiments of that invention, where the top portion of the window or door opening is arched, a coextruded plastic base is formed around the top of the opening. The base has both rigid and flexible portions so that a desired shape may be established.

It is desirable to provide a side flashing, sill pan, and headflashing and jamb flashing system integrated to perform together that can be used for doors or windows of any length, height, or shape.

It is desirable to manufacture window and door side flashing elements in one or more standard size so that a single size may be adapted for use in jambs of various depths. Standard sizes eliminate the need for special ordering of side flashing for specific field dimensions.

SUMMARY OF INVENTION

The current invention is for a window and door side flashing system and method, which used in combination with other devices and methods prevents water intrusion and accumulation around windows and doors. The SureSill SideFlash™ is designed to provide a barrier to water intrusion from the sides of windows or doors, and to discharge water to the exterior of the building.

In one embodiment of the current invention, a side flashing is provided which can typically be manufactured by extrusion and cut to a desired length to fit the door or window width. The extrusion may be provided with small fins, such as a soft plastic or rubber, so that the fins contact the rigid mating surfaces. In one example, the variable wall thickness is accommodated by an arched flexible section between two rigid portions so that the device may be stretched or compressed in the flexible section to match a desired wall thickness. The two rigid portions of the device may be overlapped for very narrow walls. The arched portion of the device also provides a seal between the rough opening and the window/door jamb against the moisture intrusion into a wall cavity and into the building. In another example, a slip joint is provided to allow for various wall thicknesses. The rigid back fin seals against the jamb and directs any incidental water into a sill pan below.

In another embodiment, a double-sided self adhesive waterproofing tape or membrane flashing is provided so that the flashing may be formed to a desired profile and adhered to selected portions of a door or window frame and jamb. In one example, a Double Self Adhering Flashing (DSAF) is manufactured with a two-sided asphalt-based, bituminous, ethylene-polypropylene or other adhesive such as sandwiched on each side of a water barrier material, which is then covered with a release liner material that can be removed to expose the adhesive layer(s). Release liners may be provided on each side of the DSAF, such as in increments of ½″ to 1″ wide strips, to allow the installer to expose sections of the adhesive in increments.

The strips make installation easier. The release liner can be configured in various means to facilitate the installation. For example, FIG. 2A has the release liner shown with slits; and FIG. 2B shows perforations, which may facilitate making the vertical folds in the self adhesive flashing. FIG. 2C shows the release liner overlapping to allow easier edge access for removal.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other objects and advantages of the present invention are set forth below and further made clear by reference to the drawings, wherein:

FIG. 1A is a cross sectional view of a Double Self Adhesive Flashing (DSAF).

FIG. 1B is a front perspective view of the DSAF of FIG. 1A.

FIG. 1C is a top perspective view of the DSAF of FIG. 1A.

FIG. 2A is a front view of an self adhesive flashing sheet with vertical strips of release liner.

FIG. 2B is a front view of an self adhesive flashing sheet with perforations.

FIG. 2C is a front view of an self adhesive flashing sheet with overlapping release liner strips.

FIG. 3A is a top cross sectional view of a first embodiment of a window or door jamb with a SideFlash™ flashing treatment.

FIG. 3B is a top cross sectional view of a second embodiment of a window or door jamb with a SideFlash™ flashing treatment.

FIG. 3C is a top cross sectional view of a third embodiment of a window or door jamb with a SideFlash™ flashing treatment.

FIG. 3D is a top cross sectional view of a fourth embodiment of a window or doorjamb with a SideFlash™ flashing treatment.

FIG. 3E is a top cross sectional view of a fifth embodiment of a window or door jamb with a SideFlash™ flashing treatment.

FIG. 4 is a side view of a DSAF embodiment for securing roofing membrane to a roof deck.

FIG. 5 is a side view of a DSAF embodiment for securing house wrap to exterior sheeting.

FIG. 6A is a top cross sectional view of a first embodiment of an extruded window or door jamb flashing treatment.

FIG. 6B is a top cross sectional view of a second embodiment of an extruded window or door jamb flashing treatment.

FIG. 7 is a top perspective view of a self adhesive flashing with drain channels.

FIG. 8 is a top perspective view of a DSAF with drain channels.

FIG. 9 is a front perspective view of a window installation with a sill pan assembly and DSAF.

FIG. 10 is a front perspective view of a window installation with a head flashing assembly and DSAF.

FIG. 11 is a front perspective view of a window installation with a sill pan assembly, a head flashing assembly, and DSAF.

FIG. 12 is a front perspective exploded view of the window installation of FIG. 9A.

FIG. 13 is a side view of a flashing with adhesives selectively applied to front portion and a back portion.

FIG. 14 is a top view of a flashing method using overlapping portions single-sided adhesive flashing by applying a first tape with adhesive facing inwards toward the window or door, and applying a second tape adhesive facing outwards away from the window or door.

FIG. 15A is a top view showing an overlapping membrane with voids in the adhesive area.

FIG. 15B is a top view showing an overlapping membrane with voids in the adhesive area and with vertical drain channels.

DETAILED DESCRIPTION OF EMBODIMENT SideFlash™ Double Self Adhesive Flashing (DSAF)

A side flashing may be provided between the door or window frame and the jamb in order to prevent water intrusion into the wall cavity and into the building. A seal may be provided by applying a caulk or adhesive and a membrane. This combination can be in the form of a waterproofing tape. It is not desirable to simply caulk between the door or window frame and the jamb because, the gap may be too wide, the caulking can entrap moisture, configuration of multiple windows may not be conducive to it, overtime, the caulk may dry and crack or separate from a sealing surface.

In this embodiment a double self-adhesive waterproofing tape, Double Self Adhesive Flashing (DSAF), is used. The DSAF is manufactured with a two-sided adhesive on each side of a water barrier material, which is then covered with release liner material that can be removed to expose a portion of one or both adhesive layers. The adhesive may be an asphalt-based, bituminous, ethylene-polypropylene or other adhesive, or other formulation.

FIG. 1A shows a Double Self Adhesive Flashing (DSAF) 100 with a substrate 120, a first adhesive layer 130, a first releasable liner 140, a second adhesive layer 150, and a second releasable liner 160. When the liner is removed, the top portion of the adhesive layer is exposed so that a portion of the self adhesive flashing may be adhered to a surface. The substrate 120 functions to support the adhesive. Preferably, the substrate is a waterproof membrane, but other materials such as paper or cloth mesh may be used.

FIG. 1B is a front perspective view of the DSAF 100 of FIG. 1A. In this figure, the DSAF has been bent into a desired shape for application to a door or window jamb. The substrate membrane 120 supports an adhesive on its front and back surfaces, so that portions of release liner 140 or release liner 160 may be removed to expose the adhesive in selected areas.

FIG. 1C is a top perspective view showing a first portion of release liner 142 as being removed from the top adhesive layer 130 and a second portion 142 b of the release liner.

In one example, the DSAF may be provided in rolls having a typical width of 6 to 12 inches and a length of 50 to 100 feet. In another example, the DSAF may be provided in pre-cut strips where a single strip is used on each side of a jamb, or where two or more overlapping strips are used. In another example, the DSAF is provided as sheets which may be cut to a desired width or length.

The release liners are typically provided in multiple vertical strips across the adhesive layer to selectively expose sections of the adhesive in increments. These increments are typically in the range of ½ to 1 inch wide strips across the width of the self adhesive flashing. The incremental release liner strips simplify the installation of the self adhesive flashing because the self adhesive flashing will not inadvertently adhere to the wrong portions of the jamb or door or window. The strips also simplify installation by permitting the exposure and application of a first portion of the self adhesive flashing, and then removing one or more other strips to apply a second portion.

Additional adhesive, such as Protecto-Tak spray adhesive by Protecto Wrap, can be applied to the exposed adhesive in order to delay the cure time of the self adhesive flashing to provide additional setting time in order to adjust a window/door in the rough opening. In one example, the spray adhesive is applied to the contact surface with the window or door nailing flange so that the window or door can be held in place until both sides of the window or door are flashed and the door or window is properly positioned or centered within its rough opening.

There are several possible useful configurations for the release liner to facilitate installation as illustrated by FIGS. 2A-2C.

FIG. 2A shows a 12 inch wide DSAF sheet 101 with vertical strips of release liner such as 162 a and 162 b. In this example the strips are 1″ wide, and are offset by ½″ from the release strips on the opposite side of the membrane. The strips of release liner may by created by slitting the release liner as the liner is applied or after a portion of the liner is applied. In one example, the sheet length may be the height of a doorjamb, such as 82 inches. In another example, the sheet is cut to a desired length. In a third example, the sheet is provided in a standard length such as four feet, and applied in two or more vertically overlapping portions in the jamb. The sheet is typically cut to a desired width before installation.

FIG. 2B shows a DSAF sheet 102 with liner perforations such as 163 a and 163 b. In this example, the liner 160 includes perforations such as 165 a and 165 b which provide a convenient reference for making vertical folds in the sheet in order to form a desired profile.

FIG. 2C shows a DSAF sheet 103 with overlapping liner strips such as 164 a and 164 b. In this example, the overlapping strips of the release liner 160 allows easier edge access for liner removal.

DETAILED DESCRIPTION OF EMBODIMENT Application of SideFlash™ Double Sided Self Adhesive Flashing (DSAF)

The Double Sided Self Adhesive Flashing (DSAF) is provided with an adhesive on at least portions of both sides of the flashing so that pre-applied adhesive may be exposed in all desired areas.

In the following representative embodiments, the flashing provides a continuous membrane for application to the sides of window or door openings. The adhesive, whether pre-applied or applied on job site, establishes a barrier against the moisture intrusion in the rough opening and into the building. Incidental water is directed into a sill pan below.

In the following examples in FIGS. 3A-3E the DASF adhesive is exposed (release liner is removed) as indicated to provide seals on the rough opening, on the window/door nailing flange or brick mold and on the jamb. At the contact surface with window/door nailing flange, a spray adhesive can be added for additional setting time in order to adjust a window/door in the rough opening (margins, etc.). Also, if DSAF adhesive can be exposed in sections, the installer may choose the best time to remove the release paper and to adhere DSAF to particular surface. A self adhesive flashing with two-sided adhesive (DSAF), seals against moisture intrusion and air infiltration into the rough opening (wall cavity) and into the building. Incidental water is directed into a sill pan below.

FIG. 3A is a top cross sectional view of a first embodiment of a window or door jamb 186 with a SideFlash™ flashing treatment. In this embodiment, the DSAF 100 is applied between the wall stud 300 and the jamb 186.

The DSAF includes an exterior section 331 with an inside surface 332 and an outside surface 333 which faces away from the exterior sheeting 320; a jamb section 334 with an inside surface 335 facing the wall stud 300 and an outside surface 336 facing the jamb 186; and an interior section 337 with an inside surface 338 facing toward the jamb and an outside surface 339 facing toward the interior trim (not shown) and away from the drywall 310. In this embodiment, the DSAF is bent to provide a seal 360 between the jamb 186 and the wall frame 300.

In this embodiment, an adhesive 340 (not shown) may be provided or applied between the flashing and several surfaces including surface 338 between the an interior section 337 and the door or window jamb; surface 363 between the door or window jamb and the flashing jamb section 364; surface 335 between the flashing jamb section 364 and the wall stud 300; surface 332 between the exterior sheeting 320 and the exterior section 331 of the DSAF; and surface 333 between the exterior section 331 of the DSAF, and the nail flange 188. The adhesive may be exposed in desired strips along surfaces 338, 363, 335, 332, and 333 in order to facilitate the application of the flashing to the jamb.

A spray adhesive, can be used at the contact surfaces of the window or door nailing flange to provide additional setting time in order to adjust a window or door in the rough opening.

FIG. 3B is a top cross sectional view of a second embodiment of a window or doorjamb with a SideFlash™ flashing treatment. In this embodiment, a portion of the DSAF 370 is doubled back over the door or window flange 188. In FIG. 3B, DSAF is turned back and adhered over the window/door nailing flange, over the fasteners, and over the joint 381 where the flange meets the jamb, providing additional seal against moisture intrusion from several locations. The flashing may also be bent to form section 380 and adhered to the door or window jamb 186 at surface 382.

FIG. 3C is a top cross sectional view of a third embodiment of a window or door jamb with a SideFlash™ flashing treatment. In this embodiment, a first portion 333 b is adhered to a portion of the brick mold 390, and a second portion 333 a is not adhered to another surface.

FIG. 3D is a top cross sectional view of a fourth embodiment of a window or door jamb with a SideFlash™ flashing treatment. In this embodiment, one side of the jamb section 334 is attached to the door or window jamb along surface 336, and the other side of the jamb section is not adhered to another surface.

In FIG. 3E, DSAF is turned back and adhered over the brick mold or stucco mold 390 at surface 386 of section 384, providing additional seal against moisture intrusion. If the masonry material such as brick, stone, stucco, etc. is adjacent to the window or door, the DSAF will protect the window or door from being exposed and in direct contact with masonry material, subject to moisture absorption from the masonry and therefore to decay, rot, or corrosion. In these embodiments of DSAF windows and doors can be installed without using sealants behind nailing flange or brick mold, eliminating expense on sealants and sealant installing labor. Also use of sealants is limited by the weather condition including the temperature.

DETAILED DESCRIPTION OF EMBODIMENT Double Sided Self Adhesive Flashing (DSAF) for Roofing Membrane

In this embodiment, DSAF can be used for installation of the membrane under-layment, which is usually installed underneath the roof shingles or roof tiles. FIG. 4 is a side view of a DSAF embodiment for securing roofing membrane to a roof deck.

The felt or other waterproofing membrane 220 adheres to DSAF 105 which is applied to the roof decking 210 at each edge, and in between edges as needed, as layered on the roof decking. The layers of membrane 220 can also adhere to DSAF 105 which is applied to a portion of the membrane being overlapped. Advantages to this installation include the elimination of punctures in the membrane because staples can be eliminated. Tin hold-down caps can also be eliminated. Another advantage is that a relatively large area of holddown may be used on the edges of the roof.

DETAILED DESCRIPTION OF EMBODIMENT Double Sided Self Adhesive Flashing (DSAF) for House Wrap

In this embodiment, DSAF can be used for adhering a house wrap to exterior sheeting. FIG. 5 is a side view of a DSAF embodiment for securing house wrap to exterior sheeting.

The house-wrap 240 adheres to DSAF 106 which is applied to the exterior sheeting 230 of the building at each edge, and in between edges as needed. The layers of house-wrap can also adhere to DSAF 106 which is applied to a portion of the house wrap being overlapped. In this embodiment, there are no staples or other fasteners through the house wrap. No tin caps would be needed, thereby resulting in reduced installation labor.

DETAILED DESCRIPTION OF EMBODIMENT Applying Adhesives to Membrane

The various embodiments of self adhesive flashing and DSAF described in this application can be provided by selectively applying an adhesive to desired areas of a membrane.

In this example, rather than using the release strips to cover areas where adhesive exposure is not desired, a bare membrane is provided and adhesive is selectively applied to portions of either or both sides of the membrane.

For example, FIG. 13 is a side view of a flashing 121 with adhesives selectively applied to front portion 122 and a back portion 123.

DETAILED DESCRIPTION OF EMBODIMENT Extruded SideFlash™ (ESF) with Flexible Center Section

An extruded or other profile can be used with or without a sealant (caulking or similar) to seal against the water intrusion into the wall cavity and into the building.

This second embodiment uses an extrusion that is manufactured with a rigid plastic material, such as PVC, co-extruded with a flexible plastic, or the entire extrusion can be made of flexible plastic, or rubber. The extrusion is designed with small mini-fins (that can be made of soft plastic or rubber, and co-extruded) on the surfaces that are intended to interface to rigid mating surfaces. Two examples of this embodiment are shown. One example uses an arched flexible section that joins the two rigid portions and allows the extrusion to be stretched, or compressed in the flexible section for various wall thicknesses. The two rigid pieces could also be overlapped for very narrow walls. The arched soft PVC also provides a seal between the rough opening and the window/door jamb against the moisture intrusion and air infiltration into a wall cavity and into the building. The second example utilizes a slip joint to allow for various wall thicknesses. The rigid back fin seals against the jamb and directs any incidental water into a sill pan below.

This embodiment eliminates the use of sealants and self adhesive flashing. The use of sealants and self adhesive flashing is limited by the weather conditions, temperature, etc., cleanliness of the construction materials, and the ability of self adhesive flashing to adhere to particular material.

FIG. 6A describes an arched flexible section that joins two rigid portions and allows the extrusion to be stretched, or compressed along the flexible section for various wall thicknesses. The two rigid pieces may also be overlapped for very narrow walls. The arched soft PVC also provides a seal between the rough opening and the window/door jamb against the moisture intrusion into a wall cavity and into the building.

An extruded or other profile can be used with or without a sealant, such as caulking, to seal against the water intrusion into the wall cavity and into the building.

FIG. 6B is a top cross sectional view of an extruded side flashing having rigid and flexible portions and sealing fins. In this embodiment, the SideFlash flashing 400 includes a first flange corner 404, where the inside of the first corner faces toward the window or doorjamb; and a second flange corner 405, where the inside of the second corner faces away from the window or door jamb.

Referring now to FIG. 6A, the first flange corner 404 comprises an inside facing plate 440, such that a portion of the inside facing plate 440 may seal against a portion of the inwardly facing edge 189 of the window or door; and a first jamb plate 425, such that the first jamb plate may be positioned between a portion of the jamb 186 and a portion of the framed opening 300. The first jamb plate 425 has an inside surface 427, and an outside surface 428. The inside facing plate 440 includes an inward facing surface 424 and a jamb facing surface 423. The inside surface may include a drywall reference ridge 429 (not shown) so that the interior rigid section may be installed at the proper depth.

The second flange corner 405 comprises an outside facing plate 410, such that a portion of the outside facing plate 410 may seal against a portion of flange of the window or door and exterior sheeting 320; and a second jamb plate 420, such that the second jamb plate may be positioned between a portion of the jamb 186 and a portion of the framed opening 300. The second jamb plate 420 has an inside surface 417, and an outside surface 418. The outside facing plate 410 includes an outside surface 413 and an inside surface 414.

The first flange corner 404 and the second flange corner 405 may be formed of a rigid plastic.

The jamb flexible section 430 includes a first jamb plate attachment point 436 and a second jamb plate attachment point 434. The jamb flexible section serves as a width adjustment element so that the flashing may be used on a range of door or window opening depths. For wide spacings, the flexible portion can be drawn flat against the jamb plates. For narrow spacings, the jamb plates may overlap.

Finned areas may be provided on the various surfaces to provide a seal. In this example, finned area 441 is provided on inside facing plate 440; the jamb flexible section 430 includes finned area 438; and finned areas 415 and 416 are provided on the outside facing plate 410. The fins are typically provided in a soft plastic material which conforms to the surface being sealed.

In one example, the flashing is provided as a co-extrusion of soft and rigid PVC. The soft PVC may be used for the jamb flexible section 430 and the fins. The soft PVC in the jamb flexible section provides a flexible bond between rigid first jamb plate 425 and second jamb plate 420. The soft PVC also provides a seal between the rough opening and the window/door jamb against the moisture intrusion into a wall cavity and into the building. The soft PVC fins are designed to provide a seal against water intrusion. This finned design eliminates the need for caulking around the jamb. This embodiment allows self-healing penetrations for attaching SideFlash to the building with fasteners

In one example the first jamb plate has a width of 1.5″ inches; the second jamb plate has a width of 1.5″ inches; the jamb flexible section 430 has a width of 0 to 3.5 inches; the inside facing plate 440 has a width of 0.5 to 1 inch; and the outside facing plate 410 has a width of 1 to 2 inches. Both inside and outside plates can have grooves for easy breakage to desired width. In other examples, other dimensions may be used.

DETAILED DESCRIPTION OF EMBODIMENT Extruded SideFlash™ (ESF) with Adjustable Slip Joint

FIG. 6A shows a slip joint device to adjust for various wall thicknesses. The rigid back fin seals against the jamb and directs any incidental water into a sill pan below.

In this embodiment, the second jamb plate 460 includes a bend 462 to form an overlap section 464 which is designed to overlap 452 a portion of the first jamb plate 450. The overlap is adjustable so that the flashing can be made wider or narrower to fit the desired opening depth. Flexible sealing fins may be provided on various surfaces as described above.

DETAILED DESCRIPTION OF EMBODIMENT Overlapping Self Adhesive Flashing

FIG. 14 is a top view of a flashing method using overlapping portions of single-sided adhesive flashing by applying a first self adhesive flashing tape 700 with adhesive facing inwards toward the window or door 186, and applying a second self adhesive flashing tape 710 with adhesive facing outwards away from the window or door. This overlapping of self adhesive flashing provides an effective Z-flashing.

DETAILED DESCRIPTION OF EMBODIMENT Self Adhering Flashing with Drain (SAF+D)

In the case of horizontal overlapping joints, on vertical and sloped surfaces such as exterior of the building, sloped roof, ledges, etc. the self adhesive flashing should be installed in a shingle fashion for positive drainage. In order for moisture to penetrate horizontal overlapping joints moisture would have to travel upwardly, against the gravity. With proper overlap (like 2″ or more) moisture may penetrate the portion of the joint but is unlikely to penetrate the whole joint.

In the case of vertical overlapping joints on vertical and sloped surfaces, such as exterior of the building, sloped roof, ledges, etc. there is a potential of moisture partially penetrating the joint. Once moisture enters the joint, it is likely to travel downwards as driven by gravity. If there are incidental voids in the adherence in vertical overlapping joints, moisture can travel through the incidental voids, and if prevented to drain, moisture can stimulate opening additional incidental voids. If the moisture is trapped and exposed to heat, such as direct sunlight, it can develop vapor and vapor pressure, and induce additional incidental voids in vertical overlapping joints. Through incidental voids moisture can migrate “sideways”, and penetrate and cause water damage or potential damage.

FIG. 7 is a top perspective view of a self adhesive flashing with drain channels. SAF+D™ (self adhesive flashing with Drain) can be created by having voids by design, intended to drain incidental moisture from overlapping joints.

For example, in the case of self adhesive flashing 9″ wide tape, there could be sections of adhesive separated with sections without adhesive. When SAF+D adheres to non-adhesive surface, only sections with adhesive will adhere. Sections without adhesive will not adhere, creating drainage paths such as 610, 612 between the sections with adhesive. If there is incidental moisture moving through the joint, it would be intercepted by drainage paths and drained without penetrating through the entire vertical overlapping joints. If there are any incidental voids side-to-side, they will also be intercepted by the drainage paths.

In addition, drainage paths would allow pressure equalization preventing a vapor pressure to stimulate incidental voids in the joint. Drainage paths also make it easier to have partial sections of adhesive exposed by removing the release paper up to the drainage path, or folding the self adhesive flashing at the drainage path. This allows sections of self adhesive flashing to be exposed and adhered and sections to be non-exposed. For example, it would be easier to install the window/door is the self adhesive flashing is adhered to window/door only and the rest has a release paper still attached. After fastening window/door to the building, release paper can be removed and other sections of self adhesive flashing can be adhered to the building. This will help avoid the “loose” parts of self adhesive flashing adhering to itself or to other surfaces during installation.

For example, FIG. 15A is a top view showing an overlapping membrane with voids in the adhesive area. A first flashing 100 a partially overlaps a second flashing 100 b. Void 800 in the overlap adhesive area can contain entrapped moisture. Void 802 in the overlap adhesive area can permit moisture penetration through the adhesive area and into a building.

FIG. 15B is a top view showing an overlapping membrane with voids in the adhesive area and with vertical drain channels. A first flashing 600 a partially overlaps a second flashing 600 b. Void 800 in the overlap adhesive area is vented through channel 610. Void 802 in the overlap adhesive area can permit moisture drainage through either channel 610 or channel 612.

DETAILED DESCRIPTION OF EMBODIMENT Double Self Adhering Flashing with Drain (DSAF+D)

FIG. 8 shows DSAF+D™ with drain channels such as 610 and 612 in a first adhesive surface 630,and drains channels such as 614 and 616 in a second adhesive layer 650.

DETAILED DESCRIPTION OF EMBODIMENT SideFlash™ With Sill Pans and Head Flashing

Both the DSAF and extruded flashings may be used in combination with sill pans and head flashings to provide a complete flashing solution for a window or door. The examples below illustrate the use of DSAF flashing, but extruded flashings may also be used.

FIG. 9 is a front perspective view of a window installation with a sill pan assembly and DSAF. The window unit 186 is shown installed over a sill pan assembly 500 and DSAF side flashing 100.

FIG. 10 is a front perspective view of a window installation with a head flashing assembly and DSAF. The head flashing assembly 520 is shown installed over the window unit 186 and the side flashing 100.

FIG. 11 is a front perspective view of a window installation with a sill pan assembly 500, a head flashing assembly 520, and DSAF flashing 100. FIG. 12 is a front perspective exploded view of the window installation of FIG. 11. 

1. A double self adhering flashing comprising a substrate having a first side and a second side; a first adhesive layer applied to the first side of the substrate; a second adhesive layer applied to the second side of the substrate; a first segmented release liner applied to the first adhesive layer, such that one or more strips of the first segmented release liner may be selectively removed from the first adhesive layer; and a second segmented release liner applied to the second adhesive layer, such that one or more strips of the second segmented release liner may be selectively removed from the second adhesive.
 2. The double self adhering flashing of claim 1, wherein the flashing is provided in a roll.
 3. The double self adhering flashing of claim 1, wherein the flashing is provided in a sheet.
 4. The double self adhering flashing of claim 1 wherein the first segmented release liner is a plurality of separate strips.
 5. The double self adhering flashing of claim 5 wherein a first strip overlaps an adjacent second strip.
 6. The double self adhering flashing of claim 1 wherein the first segmented release liner is a perforated liner, such that the perforations are provided along parallel lines.
 7. The double self adhering flashing of claim 1 further comprising at least one drain channel.
 8. The double self adhering flashing of claim 1 further comprising a plurality of drain channels.
 9. A method of sealing between the side of a window or door jamb and the window or door frame, the method comprising providing a double self adhering flashing comprising a substrate having a first side and a second side, a first adhesive layer applied to the first side of the substrate, a second adhesive layer applied to the second side of the substrate, a first segmented release liner applied to the first adhesive layer, such that one or more strips of the first segmented release liner may be selectively removed from the first adhesive layer, and a second segmented release liner applied to the second adhesive layer, such that one or more strips of the second segmented release liner may be selectively removed from the second adhesive; exposing a first portion of the double self adhering flashing and attaching the first portion of the double self adhering flashing to exterior sheeting in proximity to the door or window opening; exposing a second portion of the double self adhering flashing, wrapping the flashing partially around the jamb framing opening, and attaching the second portion to the door or window jamb framing; installing the door or window; and exposing a third portion of the double self adhering flashing and attaching the third portion of the double self adhering flashing to the interior of the window or door.
 10. The method of claim 9 further comprising applying an adhesive to at least one of the second portion of the double self adhering flashing or the third portion of the double self adhering flashing to allow time to adjust the window or door to a desired position before the adhesive sets.
 11. The method of claim 9 further comprising removing a fourth portion of the flashing in proximity to the first portion, and wrapping the fourth portion over at least a portion of the brick molding of the window or door.
 12. The method of claim 9 wherein providing a double self adhering flashing further comprises providing the substrate with at least one drain channel.
 13. The method of claim 9 wherein providing a double self adhering flashing further comprises providing the substrate with a plurality of drain channels.
 14. A side flashing for sealing between a window or door jamb and the framed opening for the window or door, the flashing comprising a first flange corner, such that the inside of the first corner faces toward the window or door jamb, the first flange corner comprising an inside facing plate, such that a portion of the inside facing plate may seal against a portion of the inwardly facing edge of the window or door, and a first jamb plate, such that the first jamb plate may be positioned between a portion of the jamb and a portion of the framed opening; a second flange corner, such that the inside of the second corner faces away from the window or doorjamb, the second flange corner comprising an outside facing plate, such that a portion of the outside facing plate may seal against a portion of the outside facing surface of the framed opening, and a second jamb plate, such that the second jamb plate may be positioned between a portion of the jamb and a portion of the framed opening; and a depth-adjustable attachment means connecting the first jamb plate to the second jamb plate.
 15. The side flashing of claim 14 wherein the depth attachment means is a slidable overlapping joint between a portion of the first jamb plate and a portion of the second jamb plate.
 16. The side flashing of claim 14 wherein the depth attachment means is flexible membrane having a first edge connected to the first jamb plate and a second edge connected to the second jamb plate.
 17. The side flashing of claim 14 wherein a plurality of flexible fins are attached to the inside facing plate, such that the fins provide a seal between the window or door jamb and the inside facing plate.
 18. The side flashing of claim 14 wherein a plurality of flexible fins are attached to each side of the outside facing plate such that a first portion the fins provide a seal between the outside facing plate and exterior sheeting, and such that a second portion the fins provide a seal between a window or door flange and the outside facing plate. 